Not sure that this is the right catergory .... but ..... the previous owners of my abode laid the floor of the rear yard (size 4 yards by 3 yards) with brick. Not only is this rather slippery in the winter, but in the summer weeds grown up rapidly between the said bricks as they were not laid tight together, nor the gaps between them filled with concrete. Although one option to kill the weeds is the constant watering of weed-killer .......... but do any of you know a better trick to kill the weeds forever? Would croesote between the gaps do a better job???